Strange reboot since 9.1
service.info at institutoptique.fr
Wed Mar 6 13:58:19 UTC 2013
i don't use ZFS on this system, only UFS2+J :)
My LDAP servers reboots more often when i compile a program (yesterday
when i compile samba36), i think it's when server it's charged (my
monitoring server uses 750 NRPE sensors + MRTG under 50 switches every
time and SNORT
But the CPU isn't very used, like memory:
CPU: 8.4% user, 0.0% nice, 0.6% system, 0.0% interrupt, 91.0% idle
Mem: 709M Active, 606M Inact, 885M Wired, 92M Cache, 826M Buf, 5599M
Systèmes UNIX, Sécurité et Réseau
Laboratoire Charles Fabry, CNRS
Le mercredi 06 mars 2013 à 11:18 +0200, Marin Atanasov Nikolov a écrit :
> On Wed, Mar 6, 2013 at 10:55 AM, Loïc Blot
> <loic.blot at unix-experience.fr> wrote:
> Since FreeBSD 9.1 I have strange problems with the
> distribution. Some
> servers are rebooting without any kernel panic, instanly.
> First i
> thought it's a problem with my KVM system, but one of my
> FreeBSD under a
> Dell R210 have the same problem.
> The servers concerned are now:
> - Monitoring server
> - LDAP test server
> - Some other servers, randomly (not in production).
> First i thought it's a problem with my FreeBSD install, then i
> another time the ISO but the problem was already here. After i
> another thing, install 9.0 and upgrade to 9.1 but same
> How can i get informations about this problem ?
> I've had similar issues with one of my FreeBSD systems. My system had
> spontaneous reboots without any kernel panic, without any clear
> evidence of why it happened.
> After a lot of trials and tests the root cause appeared to be the
> amount of ZFS snapshots I had, which were more than 1K on a 8G system.
> Upgrading from 9.0 to 9.1 didn't solve the issue, as clearly I had to
> do some cleanup of the ZFS snapshots and since then it's more than a
> month without any reboots.
> Few pointers that you could use -- get these systems monitored and
> keep an eye on the monitoring system -- CPU usage, memory, processes,
> network traffic, etc.. I've noticed that my system was running low on
> free memory and that later led me to the ZFS snapshots clue.
> So, my advise is to get first these systems monitored and watch for
> anything unusual happening. Then further investigate.
> Good luck.
> Thanks for advance.
> Best regards,
> Loïc BLOT, Engineering
> UNIX Systems, Security and Networks
> freebsd-stable at freebsd.org mailing list
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> Marin Atanasov Nikolov
> dnaeon AT gmail DOT com
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